Apparatus for preparing composition for artificial stone, bricks, &amp;c.



No. 725,693. L P FORD PATENTED APR, 21, 1908. APPARATUS FOR PREPARI NGGOMPbSITION' FOR ARTIFICIAL STONE, BRICKS, 61:0.

APPLICATION FILED NOV. 3, 1902. N0 MODEL. 3 SHEET SSHEET 1.

' PATENT-ED APR, 21, 1903.

L.P.P0RD. APPARATUS FOR PREPARING COMPOSITION FOR-ARTIFICIAL STONE,BRICKS, 6w. APPLICATION FILED NOV. 3, 1902.

3 SHEETS-SHEET 2.

N0 MODEL.

No. 725,693; 'PATENTED APR, 21, 1903.

'L. P. FORD. APPARATUS FOR PREPARING COMPOSITION FOR ARTIFICIAL STONE,BRICKS, 6w. APPLICATION FILED NOV 3, 1902 N0 MODEL. 3 SHEBTSSHEET 3 THEncrimk ravens 0c mmouwu: vusnmmon n c UNITED STATES ATENT OFFIcE.

LEWIS P. FORD, OF GRESFORD, ENGLAND.

APPARATUS FOR PREPARING COMPOSITION FOR ARTIFICIAL STONE, BRICKS, 8L0.

SPECIFICATION forming part of Letters Patent No. 725,693, dated April21, 1903. Application filed November 3, 1902. Serial No. 129,894. (Nomodel.)

To all whom, it may concern:

Be it known that I, LEWIS PETER FORD, a subject of the King of GreatBritain, residing at Gresford, in the county of Denbigh, England, haveinvented certain new and useful Improvements in Apparatus for PreparingComposition for Artificial Stone, Bricks, and the Like,of which thefollowing is a full,clear, and exact description. I

I will describe my invention by the aid of the accompanying drawings, inwhich Figure l is an elevation, partly in section, of the completeapparatus. Fig.1 is an enlarged detail view of the forward end thereof,

showing the cooling-jacket and a portion of the perforated water-pipe.Fig. 2 is a plan with the cover removed, and Fig. 3 is a verticalsection drawn on the line 3 3 of Fig. 1. Fig. t is a plan, to anenlarged scale, of the apparatus for measuring and supplying thematerials.

a is the store for the sand, and b is the store for the lime. In closeproximity to these stores I arrange the apparatus for measuring andsupplying the sand and lime in measured quantities.Thispreferablyconsists,as shown in the drawings, of two cylinders c andd, having open tops into which the materials are thrown by hand. Each ofthe cylinders has, respectively, a radial arm 0 and d, mounted onvertical axes c and (1 on which are keyed worm-wheels 0 d gearing withworms 0 d, fixed on a shaft 6, provided with a driving-pulley 9. Eachcylinder is provided with an aperture in its bottom '0 d through whichthe materials are wiped by the respective arms 0' and d. The materialsfall through the holes 0 d through a chute f (see' Fig. 1 into the lowerportion of an elevator g, having an endless chain g and buckets 9 whichdeliver the materials into a hopper or chute h, preferably provided withan automatic valve, through which the materials fall into the mixer.

The mixer consists of a hollow high-pressure steam jacket orcasingi,which is mounted on suitable supports 1" and provided, as usual,with a shaft "or shafts t running in suitable bearings i and providedwith mixing-arms 11 The shafts 71 are geared together by means oftoothed wheels jj, driven by bevelwheels jj and the belt-pulleyj Theupper part of the mixer is preferably covered with a domed or arched topit, and suitable'concave ledges are located on the inside, whichconstitute conduits la and are attached to the upper edges of the casingvi to carry off any superfluous moisture collecting on the interior ofthe dome k. The mixer is also provided with an inlet 6 for steam andwith a steam-trap 2' In some cases it may be necessary to supply extrawater to the materials in the mixer,

and this latter is therefore fitted with a perforated water-pipe Z,passing from end to end thereof.

The tubular outlet m is preferably formed with a cold-Water jacket m,which may be provided with induction-pipe m and eduction-pipe m Thematerials are fed by hand into the measuring apparatus, which allowspredetermined quantities, according to the size of the holes 0 (Z tofall into the lower portion of the elevator g, whence they are raisedinto the mixer, where they are thorougly mixed and heated and the limeproperly slaked. The materials then pass out through the cooled tubularoutlet m into a hopper n, forming part of the brick or the like press.

It is clear that other suitable forms of measuring apparatus than theone shown in the drawings may be employed, also that I may in some casesemploy more than one elevator.

By this invention I do away with several large hoppers, several floors,reduce the size of the buildings required, the length of lifts andstaircases, decrease the number of -operations in the manufacture, anddo away with all handling of the materials from the time they are throwninto the cylindrical cavities or boxes until the pressed bricks or thelike are delivered by the brick machine or press, after which they aresubjected to high-pressure steam in cylinders.

What I claim as my invention, and desire to secure by Letters Patent, is

1. An apparatus for preparing composition for artificial stone bricksand the like comprising a mixer-casing in U form having a heatingjacketand provided with concave ledges located on the inside, which constituteconduits at the upper edges of the mixingcasing for carrying oflf superfiuous moisture from within the mixing-chamber.

2. An apparatus for preparing composition for artificial stone bricksand the like comprising a mixer-casing having a heatingjacket and atubular outlet having a coolingjacket.

3. An apparatus for preparing composition for artificial stone bricksand the like comprising lime and sand, automatic measuring devices, anelevator for conveying the lime and sand upwardly having a shoot intowhich the measuring devices discharge, a mixercasing having aheating-jacket, a hopper into which the elevator discharges, and atubular outlet having a cooling-jacket, a shaft having stirring-arms andmounted Within the mixer-casing, and means for operating the measuringdevices, the elevator, and the shaft.

In Witness Whereoi'I have hereunto set my hand in the presence of twowitnesses.

L. P. FORD.

Witnesses:

B. J. B MILLS, CLAUDE K. MILLS.

